I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
salt salty sault salute sallet saltie silt slot slit slut slat slaty salad sleet silty slate slatey slutty solute sailed sealed zealot sleety solate slitty sellout sallied sold slid sled sild celt sloid sloyd slued soldi soldo soled solid slide zlote zloty
alt halt malt salt dealt shalt
sal sale sall sallow sallowy sally